What does fault code TCM-042D mean?

Diagnostic fault code details for TCM-042D (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C30 (2007–2013)). Repair service at OBD Tuning.

VOLVO

TCM-042D - Shift fork 3. Shift fork jumped out of gear

System

Transmission Control Module (TCM)

Volvo models this fault code applies to

Applies to the following models:

4 models

C30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)

Show models by year and engine (10)

What does this fault code mean?

Shift fork 3 has slipped out of gear 2 without the transmission control module (TCM) having requested any movement. The cause may lie in the mechatronic unit or in the transmission, and the other fault codes decide which action is needed.

Possible causes

Damaged shift fork

What you can do

1Read out the fault codes from the transmission control module again to find out whether the fault is in the transmission or in the mechatronic unit
2If fault codes TCM-0410, TCM-0411 or TCM-0415 are set, a workshop should replace the mechatronic unit
3If none of these codes is set, a workshop should measure the speeds of the input shafts to decide which action is needed
4If the fault remains after the mechatronic unit is replaced and a test drive is done, the transmission is faulty and a workshop should replace it

Symptoms you may notice4

Yellow warning symbol and message in the display
Gears shift hard or jerky, sometimes or all the time
Shifts occur too early, too late or too often, sometimes or all the time
Gear changes take too long to complete, sometimes or all the time

General guidance for car owners. Diagnosis on the car can point to a different cause.